Hook



FIG. 1 is a perspective view of a hook showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof; and,

FIG. 5 is a left side view thereof, the right side view being a mirrorimage.

The dashed lines shown in FIG. 4 are for environmental purposes only andform no part of the claimed design.

The ornamental design for a hook, as shown and described. 